UA2647
UA2647 (United Airlines) is a multi-stop service on 5 routes, busiest San Francisco to Boston. Of 783 departures recorded from October 2024 to July 2026, 87.5% left on time, according to the US BTS.
- On-time departures87.5%of 783 flights
- Average delay8.6 min
- July 202657▲ 83.9%vs July 2025
- Cancelled1.0%
- Legs flown under this number5
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 36 | ▲ 16.1% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 31 | ▲ 3.3% |
| May | 31 | 56 | ▲ 80.6% |
| June | 30 | 59 | ▲ 96.7% |
| July | 31 | 57 | ▲ 83.9% |
| August | 57 | – | – |
| September | 32 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 45 | – | – |
| Year to date (Jan–Jul) | 212 | 298 | ▲ 40.6% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 96.7% | 88.6% | ▼ 8.4% |
| February | 75.0% | 85.2% | ▲ 13.6% |
| March | 100.0% | 77.4% | ▼ 22.6% |
| April | 96.7% | 83.9% | ▼ 13.2% |
| May | 90.3% | 89.3% | ▼ 1.1% |
| June | 90.0% | 89.7% | ▼ 0.4% |
| July | 83.9% | 96.4% | ▲ 14.9% |
| August | 89.5% | – | – |
| September | 93.8% | – | – |
| October | 61.3% | – | in progress |
| November | 90.0% | – | – |
| December | 84.4% | – | – |
| Year-to-date average (Jan–Jul) | 90.4% | 87.2% | ▼ 3.5% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 1 | 0.0% |
| February | 0 | 1 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 5 | ▲ 400.0% |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.0% 775
- Cancelled 1.0% 8
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO BOS San Francisco International Airport – Boston Logan International Airport | 4,341 | 11.4 min | 85.0% | 595 |
| LAX SFO Los Angeles International Airport – San Francisco International Airport | 543 | -2.7 min | 98.1% | 105 |
| ONT SFO Ontario International Airport – San Francisco International Airport | 585 | -3.5 min | 97.3% | 37 |
| ORD DCA Chicago O'Hare International Airport – Ronald Reagan Washington National Airport | 983 | -2.2 min | 96.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 27 | 27 | 81.5% | 0 |
| December 2024 | 31 | 29 | 72.4% | 2 |
| January 2025 | 31 | 30 | 96.7% | 1 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 31 | 31 | 100.0% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 30 | 30 | 90.0% | 0 |
| July 2025 | 31 | 31 | 83.9% | 0 |
| August 2025 | 57 | 57 | 89.5% | 0 |
| September 2025 | 32 | 32 | 93.8% | 0 |
| October 2025 | 31 | 31 | 61.3% | 0 |
| November 2025 | 30 | 30 | 90.0% | 0 |
| December 2025 | 45 | 45 | 84.4% | 0 |
| January 2026 | 36 | 35 | 88.6% | 1 |
| February 2026 | 28 | 27 | 85.2% | 1 |
| March 2026 | 31 | 31 | 77.4% | 0 |
| April 2026 | 31 | 31 | 83.9% | 0 |
| May 2026 | 56 | 56 | 89.3% | 0 |
| June 2026 | 59 | 58 | 89.7% | 1 |
| July 2026 | 57 | 55 | 96.4% | 2 |